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46篇 您的检索式:作者名="Yihang Guo"
    题名 作者 年代 出处 被引量
1High-speed and high-efficiency three-dimensional shape measurement based on Gray-coded light显示文摘Fringe projection profilometry has been increasingly sought and applied in dynamic three dimensional(3D)shape measurement.In this work,a robust,high-efficiency 3D measurement based on Gray-coded light is proposed.Unlike the traditional method,a tripartite phase unwrapping method is proposed to avoid the jump errors on the boundary of code words,which are mainly caused by the defocusing of the projector and the motion of the tested object.Subsequently,the time overlapping coding strategy is presented to greatly increase the coding ef-ficiency,decreasing the projected number in each group from seven(i.e.,3+4)to four(i.e.,3+1)for one restored 3D frame.The combination of two proposed techniques allows the reconstruction of a pixel-wise and unambiguous 3D geometry of dynamic scenes with strong noise using every four projected patterns.To the best of our knowledge,the presented techniques for the first time preserve the high anti-noise ability of a method based on the Gray code while overcoming the drawbacks of jump errors and low coding efficiency.Experiments have demonstrated that the proposed method can achieve robust,high efficiency 3D shape measurement of high speed dynamic scenes even polluted by strong noise.ZHOUJIE WU WENBO GUO YUEYANG LI YIHANG LIU QICAN ZHANG 2020Photonics Research2020,8,6:17
2Downregulation of serum mi R-17 and mi R-106b levels in gastric cancer and benign gastric diseases显示文摘Altered micro RNA(mi RNA) associated with gastric cancer(GC) development and mi R-17 and mi R-106 b were differentially expressed in GC tissues. This study detected serum levels of mi R-17 and mi R-106 b expression in GC, benign gastric disease(BGD) and healthy controls to assess them as tumor markers for GC. Serum samples from 40 GC, 32 BGD(10 gastric ulcer, 14 gastric polyps, and 8 gastric ulcer with polyps) and 36 healthy individuals were subjected to quantitative reverse transcription polymerase chain reaction(q RT-PCR) analysis of mi R-17 and mi R-106 b expression. The data showed that the serum levels of mi R-17 and mi R-106 b were significantly reduced in healthy individuals and BGD patients compared to GC patients. There was a significant association of mi R-17 and mi R-106 b expression with age, but not with other clinicopathological features, such as gender, tumor differentiation, stage and lymphatic metastasis. Further analysis showed that, in discriminating GC patients from healthy controls, mi R-17 could yield a receiver-operating characteristic(ROC) area under the curve(AUC) of 0.879 with 80.6% sensitivity and 87.5% specificity and mi R-106 b could yield an AUC of 0.856 with 75.0% sensitivity and 92.5% specificity. The combined AUC of mi R-17 and mi R-106 b was 0.913 with 83.3% sensitivity and 87.5% specificity. Collectively, these data suggest that detection of serum mi R-17 and mi R-106 b levels should be further evaluated as novel non-invasive biomarkers in early GC detection and surveillance of disease progression.Qinghai Zeng Cuihong Jin Wenhang Chen Fang Xia Qi Wang Fan Fan Juan Du Yihang Guo Changwei Lin Kaiyan Yang Jingjing Li Xiaowei Peng Xiaorong Li Ke Cao 2014Chinese Journal of Cancer Research2014,26,6:12
3Y_(4)GeO_(8):Er^(3+),Yb^(3+) up-conversion phosphors for optical temperature sensor based on FIR technique显示文摘Herein,we reported novel Y_(4)GeO_(8):Er^(3+),Yb^(3+)phosphors elaborated via conventional solid-state reaction.and we further explored their properties as optical thermometer by using fluorescence intensity ratio(FIR)method complemented by detailed analysis on crystal structure,up-conversion luminescence and energy transfer from Yb^(3+)to Er^(3+).Upon 980 nm laser excitation,Y_(4)GeO_(8):Er^(3+),Yb^(3+)phosphors present525,547 and 659 nm emission bands assigned to the characteristic transitions of Er^(3+).Furthermore,Y_(4)GeO_(8):Er^(3+),Yb^(3+)samples show outstanding temperature sensing performances.To be specific,the minimal temperature resolution is 0.03 K(303 K),and the relative sensitivity of FIR can be up to 1.152%/K(303 K).Hence,Y_(4)GeO_(8):Er^(3+),Yb^(3+)phosphors can be possible candidates for thermometry devices.Yihang Chen Jing Chen Ye Tong Wenna Zhang Xiusha Peng Hai Guo Daxing Huang 2021Journal of Rare Earths2021,39,12:5
4Supermolecular layered double hydroxides显示文摘Research progresses in the layered double hydroxides [M2+(1-x)M3+x(OH)2]x+An-x/n.mH2O intercalatedwith metal coordinate ions or oxometalates in the last ten years are reviewed. These layered double hydroxides are mainly intercalated with polyoxometalate (POM) ions, a LiAl-LDH photochemical assembly containing TiO2 and CH3(CH2)12COO- anions, together with Zn(TPPC) (porphy-rin derivate) and macrocyclic ligand-containing porphyrin derivate anions. Emphasis is put on the synthesis methods for intercalation of the anions into the interlayer regions, the characterization techniques and structures for the layeredcompounds and the newest research progress in the fields such as catalysis. The review also forecasts the prospects of the field.Hu Changwen Li Danfeng Guo Yihang Wang Enbo 2001Chinese Science Bulletin2001,46,13:3
5Het- erogeneous photodegradation of aqueous hydroxyl butane- dioic acid by microporous polyoxometalates 显示文摘GUO Yihang HU Changwen JIANG Shicheng 2002Applied Catalysis B : Environmental2002,36,:1
6Lacunary Keg- gin-type Polyoxometalate-based Macroporous Composite Films: Preparation and Photocatalytic Activity 显示文摘Yu Yang Yihang Guo Changwen Hu 2003Appl Catal A : general2003,252,3:1
7Synthesis of dimethyl carbonate from methanol and carbon dioxide in the presence of polyoxometalates under mild conditions显示文摘 Guo Yihang Wang Chungang 2003Applied Catalysis A:General2003,256,12:1
8Microporous decatungstates:synthesis and photochemical behavior显示文摘GUO Yihang HU Changwen WANG Xinlong 2001Chemistry of Materials2001,13,11:1
9Photocatalytic degradation of aqueous formic acid over the silica composite films based on lacunary Keggin-type polyoxometalates显示文摘LI Danfeng GUO Yihang HU Changwen 2002Applied Catalysis A: General2002,235,12:1
10Preparation and heterogeneous photocatalytic behaviors of the surface-modified porous silica materials impregnated with monosubstituted Keggin units显示文摘GUO Yihang HU Changwen JIANG Chunjie 2003Journal of Catalysis2003,217,1:1
11Efficient degradation of dye pollutants on nanoporous Polyoxotungstate-anatase composite under visiblelight irradiation显示文摘YANG Yu WU Qingyin GUO Yihang 2005Journal of Molecular Catalysis A : Chemical2005,225,:1
12Catalytic synthesis of diphenolic acid from levulinic acid over cesium partly substituted Wells-Dawson type heteropolyacid显示文摘Yu Xiaodan Guo Yihang Li Kexin Journal of Molecular Catalysis A:Chemical0,,:1
13Photocatalytic degradation of dye naphthol blue black in the presence of zirconia-supported Ti-substituted Keggin-type polyoxometalates显示文摘JIANG Chunjie GUO Yihang HU Changwen 2004Materials Research Bulletin2004,39,2:1
14Microporous polyoxometalates POMs/SiO2: synthesis and photocatalytic degradation of aqueous organocholorine pes- ticides显示文摘GUO Yihang WANG Yuanhong HU Changwen 2000Chem Mater2000,12,:1
15显示文摘Li Danfeng Guo Yihang H u Changwen 2004Journal of Molecular Catalysis A : Chemical2004,207,:1
16Microporous polyoxometalates POMs/SiO2: synthesis and photocatalytic degradation of aqueous organocholorine pesticides显示文摘GUO Yihang WANG Yuanhong HU Changwen 2000Chemistry of Materials2000,12,11:1
17One-step sol-gel preparation and enhanced photocatalytic activity of porous polyoxometalate-tantalum pentoxide nanocomposites显示文摘JIANG Shujuan GUO Yihang WANG Changhua 2007Journal of Colloid and Interface Science2007,308,1:1
18Preparation, characterization and photocatalytic property of the PW 11 O 39 7? /TiO 2 composite film towards azo-dye degradation显示文摘Danfeng Li Yihang Guo Changwen Hu Chunjie Jiang Enbo Wang 2003Journal of Molecular Catalysis A Chemical2003,,2:1
19Preparation and heterogeneous photocatalytic activity of mesoporous H3PW204o/ZrO2 composites 显示文摘Qu Xuesong Guo Yihang Hu Changwen 2007Journal of Molecular Catalysis A: Chemical2007,262,:1
20Lacunary keggin-type polyoxometalates-basedmacro porous composite films:preparation and photocatalytic activity显示文摘YU Yang GUO Yihang HU Changwen 0,,:1
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